期刊
RSC ADVANCES
卷 5, 期 25, 页码 19520-19527出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra00391a
关键词
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资金
- National Natural Science Foundation of China [21073200, 21273251, 91333111, 21190034, 21221002]
- Beijing Municipal Science & Technology Commission [Z131103002813097]
- project of Construction of Innovative Teams and Teacher Career Development for Universities and Colleges Under Beijing Municipality [IDHT20140512]
- National Basic Research Program of China (973) [2011CB808402, 2013CB933500]
- Chinese Academy of Sciences
Two air-stable polymeric semiconductors were rationally designed and synthesized, namely PNDI-DPP and PNDI-T(DPP)T, containing naphthalenediimide (NDI) units and diketopyrrolopyrrole (DPP). The coplanar thiophene-substituted DPP moieties act as donors rather than acceptors, even though DPP is an electron-deficient core. In a bottom-gate/top-contact device architecture, the effect of changing the number of thiophene linkers on the performance of the two completely different OFETs was investigated. PNDI-T(DPP)T presented unipolar p-type behaviour with an average hole mobility of 0.02 cm(2) V-1 s(-1), while PNDI-DPP exhibited ambipolar transport with average electron and hole mobilities of 5.7 x 10(-3) and 1.6 x 10(-3) cm(2) V-1 s(-1), respectively. Moreover, OFETs based on the two polymers showed good air-stability with negligible changes after being stored under ambient conditions for over 3 months.
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